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Elsevier Science BV |
Documentos disponibles de esta editorial (389)
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Cojocaru, C. ; Khayet Souhaimi, Mohamed ; Zakrzewska-Trznadel, G. ; Jaworska, A. | Elsevier Science BV | 2009-08-15The factorial design of experiments and desirability function approach has been applied for multiresponse optimization in pervaporation separation process. Two organic aqueous solutions were considered as model mixtures, water/acetonitrile and w[...]texto impreso
A central compositional orthogonal design has been applied for modeling and optimization of sweeping gas membrane distillation process. The effects of the operational parameters, liquid temperature, gas temperature, liquid flow rate and gas flow[...]texto impreso
Rosado Vélez, Jaime ; Aranda, V. M. ; Blanco Ramos, Francisco ; Arqueros Martínez, Fernando | Elsevier Science BV | 2015-07-01An experimental method to characterize the crosstalk and afterpulsing in silicon photomultipliers has been developed and applied to two detectors fabricated by Hamamatsu. An analytical model of optical crosstalk that we presented in a previous p[...]texto impreso
Moreno Salinas, David ; Moreno Salinas, Raúl ; Pereira, Augusto ; Aranda, Joaquín ; Cruz García, Jesús Manuel de la | Elsevier Science BV | 2019-03This paper describes the use of Kernel Ridge Regression (KRR) and Kernel Ridge Regression Confidence Machine (KRRCM) for black box identification of a surface marine vehicle. Data for training and test have been obtained from several manoeuvres [...]texto impreso
Ruiz Cembranos, José Alberto ; Coma Díaz, Mario ; Martín Moruno, María del | Elsevier Science BV | 2019-01-10In this letter we reflect on the propagation of gravitational waves in alternative theories of gravity, which are typically formulated using extra gravitational degrees of freedom in comparison to General Relativity. We propose to understand tha[...]texto impreso
Arqueros Martínez, Fernando ; Barrio Uña, Juan Abel ; Contreras González, José Luis ; Fonseca González, Mª Victoria ; López Moya, Marcos ; Morcuende, D. ; Nieto, D. ; Nievas Rosillo, Mireia ; Peñil del Campo, Pablo ; Rosado, J. ; Saha, Lab ; Tejedor, L. A. ; otros, ... | Elsevier Science BV | 2019-09The Cherenkov Telescope Array (CTA) is the major next-generation observatory for ground-based veryhigh-energy gamma-ray astronomy. It will improve the sensitivity of current ground-based instruments by a factor of five to twenty, depending on th[...]texto impreso
We analyze the peculiarities of the motional narrowing effect in disordered one-dimensional Frenkel chains with off-diagonal disorder, induced by uncorrelated Gaussian fluctuations in the positions of the host units. A clear difference in the sc[...]texto impreso
Kirchner Bossi, N. ; Prieto, L. ; García Herrera, Ricardo ; Carro Calvo, L. ; Salcedo Sanz, S. | Elsevier Science BV | 2013-05A wind clustering methodology capable of dynamically characterizing and long-term reconstructing daily surface wind series is introduced and tested for six meteorological towers at different wind farms in Spain, for the period 1871–2009. On this[...]texto impreso
Medina Valdés, L. ; Pérez Liva, Mailyn ; Camacho, J. ; Udías Moinelo, José Manuel ; Herraiz, J. L. ; Gonzalez Salido, N. | Elsevier Science BV | 2015This work describes preliminary results of a two-modality imaging system aimed at the early detection of breast cancer. The first technique is based on compounding conventional echographic images taken at regular angular intervals around the ima[...]texto impreso
Benito García, Jaime ; Fraile Prieto, Luis Mario ; Sánchez-Tembleque Verbo, Victor ; Vedia Fernández, María Victoria | Elsevier Science BV | 2020-02-10We report on the first measurement of the half-lives of K-pi = 11(-) and 12(+) four-quasiparticle states in the even-even nucleus W-178. The sub-nanosecond half-lives were measured by applying the centroid shift method to data taken with LaBr3(C[...]texto impreso
Cruz, A. ; Fernández Pérez, Luis Antonio ; Íñiguez, D. ; Tarancón, A. | Elsevier Science BV | 1996-05-02We have made a study of several update algorithms using the XY model. We find that sequential local overrelaxation is not ergodic at the scale of typical Monte Carlo simulation time. We have introduced a new multisite microcanonical update metho[...]texto impreso
Herrera Fernández, José María ; Sánchez Brea, Luis Miguel ; Bernabeu Martínez, Eusebio | Elsevier Science BV | 2013-06-15Diffractive optical elements (DOEs) are commonly used for beam shaping in the far field. In the present work, we develop an algorithm for near-field beam shaping using a double DOE system with binary modulation, so that it can be easily implemen[...]texto impreso
In a previous paper [2], the authors proved that a property of ‘acyclity’ in fuzzy preference relations was anecessary and sufficientcondition for the existence of unfuzzy nondominated alternatives when such aset of alternatives is finite. In th[...]texto impreso
We construct a new family of N -fold supersymmetric systems which is referred to as “type B”. A higher-derivative representation of the N -fold supercharge for this new family is given by a deformation of the type A N -fold supercharge. By utili[...]texto impreso
This paper presents an approach to the local stereo correspondence problem. The primitives or features used are groups of collinear connected edge points called segments. Each segment has several associated attributes or properties. We have veri[...]texto impreso
Alcaraz Romo, Lorena ; García Díaz, Irene ; González, Laura ; Rabanal, María Eugenia ; Urbieta Quiroga, Ana Irene ; Fernández, Paloma ; López, Félix A. | Elsevier Science BV | 2019-06Several phases with variable stoichiometry ZnxMn3-xO4 (with x = 0.25, 0.85 and 1) and ZnO have been obtained from the black mass, a widely generated residue of wasted alkaline batteries. The obtained samples have been characterized by X-ray diff[...]texto impreso
Ballesteros, H. G. ; Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Muñoz Sudupe, Antonio | Elsevier Science BV | 1996-06-20We present the results of a Monte Carlo simulation of the RP^(2) model in three dimensions with negative coupling. We observe a second order phase transition between the disordered phase and an antiferromagnetic, unfrustrated, ordered one. We me[...]texto impreso
Oller, J. A. ; Oset, E. ; Guerrero, F. ; Peláez Sagredo, José Ramón | Elsevier Science BV | 2000-01-31A non-perturbative method [1] which combines constraints from chiral symmetry breaking and coupled channel unitarity is used to describe meson-meson interactions up to ?stexto impreso
In this paper three families of test statistics for testing nonadditivity in loglinear models are presented under the assumption of either Poisson, multinomial, or product-multinomial sampling. These new families are based on the phi-divergence [...]texto impreso
In this work we present the results of a complete calculation of the gamma gamma --> pi(0) pi(0) amplitude to leading order in the large N approximation (N being the number of Goldstone bosons) up to order m(pi)(2)/F-2, The amplitude turns to b[...]texto impreso
Martínez Matos, Óscar ; Calvo Padilla, María Luisa ; Cheben, Pavel ; Rodrigo Martín-Romo, José Augusto ; Janz, Siegfried ; Xu, Dan-Xia ; Delâge, André | Elsevier Science BV | 2007-02-01We propose a new type of arrayed waveguide grating (AWG) multiplexer/demultiplexer based on modified group refractive index. This device is composed by an array of straight and parallel waveguides of equal length and each waveguide consist of tw[...]texto impreso
A plate-and-frame membrane module has been used in sweeping gas membrane distillation process. Both numerical simulation and experimental studies have been carried out. The numerical simulation focuses on modelling heat, mass and momentum transp[...]texto impreso
Fernández Pérez, Luis Antonio ; Martín Mayor, Víctor ; Sciretti, D. ; Tarancón, A. | Elsevier Science BV | 2005-11-10We investigate by means of Monte Carlo simulation and finite-size scaling analysis the critical properties of the three dimensional O (5) non-linear ? model and of the antiferromagnetic RP^(2) model, both of them regularized on a lattice. High a[...]texto impreso
Barragán García, Vicenta María ; Ruiz Bauzá, Carlos ; Mengual Cabezón , Juan Ignacio | Elsevier Science BV | 1994-10-10The apparent electro-osmotic permeability, W, of three ion-exchange membranes has been obtained under different experimental conditions. The behaviour of W as a function of the current density, I, shows the following characteristics: (i) at suff[...]texto impreso
In this paper, we introduce kinds of fuzzy paracompactness on fuzzy subsets, relative to a fuzzy topological space. For this, we use the Luo's definitions of fuzzy aracompactness. We give the relationship between [alpha]-paracompactness and the [...]